I believe that bitcoin is underestimated, I do not claim that it should only grow! But I'm sure that the future is for him! crypto currency in general, and bitcoin in particular - this is digital gold, many people still do not understand this. I'm sure that in ten years it will be so.
Stop comparing bitcoin and gold both were different things and why not both can stay in the future? Bitcoin is already the most valued currency of the world but it don't have physical structure whereas the gold is metal and it is considered as the most safest investment so we can't compare them anyways.
Digital gold currency exists as well, you buy some and get a digital certificate proving the ownership. There are just a few issuers since a lot of people considered it as a high-yield investment program and a decade ago fraudulent schemes were really using it and some sprang up and disappeared after some time, people lost millions of dollars in.
But I do agree Gold shouldn't be compared to Bitcoin because both are different investments types